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Production method of attapulgite gelatin for coating thickener

A paint thickener and attapulgite technology, which is applied in the direction of chemical instruments and methods, coatings, fibrous fillers, etc., can solve the problems of reducing thixotropic index, no viscosity, etc., to increase dosage, improve competitiveness, expand The effect of application range

Inactive Publication Date: 2006-12-20
JIANGSU PROVINCE HUAIYUAN MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the aggregates in the attapulgite clay are completely depolymerized and dispersed thoroughly in water or other solutions with a certain concentration, the attapulgite rod crystals interweave into a spatial network, and the system forms a structure similar to a "chaotic straw pile", and the system has high viscosity. , under the action of high shear force, the rod crystal gradually conforms to the shear direction, the viscosity is greatly reduced and has a large thixotropic index. This network structure is the comprehensive result of physical and chemical effects, and has a wide range of pH values It is quite stable. Therefore, theoretically speaking, attapulgite clay has the advantages of strong thickening ability, large thixotropic index, and wide range of pH value. It can be used as a paint thickener to prevent the paint from settling during storage and transportation. and construction sagging, and can obtain a suitable film thickness and improve the hiding power of one painting, but when the clay aggregates are not completely depolymerized or dispersed in the system, the attapulgite still exists in large particles, Compared to nanoparticles, they do not form a good network structure and thus do not have sufficient viscosity

Method used

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  • Production method of attapulgite gelatin for coating thickener

Examples

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example 1

[0023] Example 1: First, select attapulgite concentrated ore 100kg, add water and additives to soak for 5 days, additive MgO 2kg, water 900kg; then, pressure 50-70 kg / cm 2 Rolling to get wet material with 40% water content, soak the wet material again for 2-3 days, and roll the wet material two or three times in a row; secondly, dry at 120°C to get dry material with 8% water content; finally, grind the dry material Attapulgite gel was obtained with 500 mesh.

[0024] Among them, when the raw material of attapulgite is coarse ore, the step of stirring and beating is added after the first rolling, that is, the wet beneficiation step. The wet ore washing is to add water and dispersant to the wet material and stir. The weight of the dispersant sodium tripolyphosphate is 0.1kg, water The weight is 900kg.

[0025] Wherein, the solvent-based paint thickener is produced by adding modifier 12 alkyltrimethylammonium chloride in the soaking or stirring beating process, and the weight of...

example 2

[0027] Example 2: First, select 100kg of attapulgite concentrated ore, add water and additives to soak for 6 days, the weight of additive MgO is 3kg, and the water is 900kg; then, the pressure is 50-70 kg / cm 2 Rolling to get wet material with 50% water content, soak the wet material again for 2-3 days, and roll two or three times in a row to get wet material; secondly, dry at 100°C to get dry material with 10% water content; finally, grind the dry material Attapulgite gel was obtained with 500 mesh.

[0028] Among them, when the raw material of attapulgite is coarse ore, the step of stirring and beating is added after the first rolling, that is, the wet beneficiation step. The wet beneficiation is to add water and dispersant to the wet material for stirring. The dispersant sodium phosphate weighs 0.5kg and water 900kg.

[0029] Among them, the solvent-based paint thickener is produced by adding modifier 16 alkyltrimethylammonium chloride in the soaking or stirring beating proc...

example 3

[0031] Example 3: First, apply 100kg of attapulgite concentrated ore, add water and additives to soak for 7 days, the additive MgO weight is 4kg, and the water is 900kg; then, the pressure is 50-70 kg / cm 2 Rolling to obtain a wet material with a moisture content of 55%, soaking the wet material again for 2-3 days, rolling two or three times in a row to obtain a wet material; secondly, filtering the wet material, drying at a temperature of 80°C to obtain a dry material with a moisture content of 8%; finally, The dry material was pulverized into 500 mesh to obtain attapulgite gel.

[0032] Among them, when the raw material of attapulgite is coarse ore, the step of stirring and beating is added after rolling, that is, the wet beneficiation step. The wet beneficiation is to add water and dispersant to the wet material. The dispersant is 1.0kg of phosphate and 900kg of water.

[0033] Wherein, the solvent-based paint thickener is produced by adding modifier 18 alkyltrimethylammoniu...

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Abstract

This invention discloses a method for producing attapulgite gel used in paint thickening agent, comprising: first, soak the attapulgite ore concentrate with water and additive for 5-7d, wherein the additive MgO is 2-4% of the ore concentrate weight, and the ratio of the ore concentrate and water is 1:9; then roll the mixture at pressure of 50-70 kilogram / cm2 to be wet material with 40-55% water content, soak the wet material for another 2-3 days, and continuously roll 2-3 more times to obtain the finished wet material; second, filtrate the wet material, and dry it at below 120Deg C to obtain the dry material with 8-12% water content; finally, grind the dry material to 500 order to obtain the attapulgite gel. This invented attapulgite thickening agent used in water paint and solvent paint is characterized of high viscosity coefficient and thixotropy index, thorough dispersion, and no agglomeration.

Description

[0001] Technical field [0002] The invention relates to a production method of a paint thickener, in particular to a production method of an attapulgite gel used for a paint thickener. Background technique [0003] Rheology is an important factor that must be considered at all stages of coating preparation, storage, transportation and application. Only by choosing an appropriate thickening rheological agent can the dispersed base material and pigment be well protected; a high-build coating with good thixotropy can be formed; precipitation can be effectively prevented during storage and transportation; and good stability can be maintained during construction. Leveling while controlling sagging. [0004] There are roughly three types of paint thickeners: natural organic gums such as guar gum, chemical synthetic organics and inorganic colloids. Thickening rheological agents commonly used in my country are mainly chemically synthesized organic compounds. They are: ① cellulose e...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09C3/00
Inventor 夏建文何建蒋靖崔家岗
Owner JIANGSU PROVINCE HUAIYUAN MINING
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